we have a cisco 2811 running call manager express and if the router is rebooted then the ip broadcast address with whatever the broadcast address is appears automatically on both fastethernet ports and causes issues with the ip phones registring with the system, they jsut do not register when this command is in. the minute we take it off the phones register.
if we take this two commands out and save the config and reboot they re-appear again.
version is c2800nm-spservicesk9-mz.124-9.T7.bin
also tried it on c2800nm-spservicesk9-mz.124-15.T7.bin and still the same.